Scallop jar-closure.



C. HAMMER.

SCALLOP JYAR CLOSURE.

APPLICATION FILED JUNE 6.1918.

1,29 3,088, Patented Feb. 4, 1919.

I n I U/wzr/es Ezmmez;

UNITED STATES PATENT OFFICE.

OHARLES- HAMMER, OF QUEENS, NEW YORK, ASSIGNOR TO AMERICAN METAL CAP COMPANY, 01 BROOKLYN, YORK, A CORPORATION OF NEW YORK.

SOALLOP Jan-CLOSURE.

Specification of Letters Patent.

Application filed June 6, 1918. Serial No. 288,460.

To all whom it may concern:

Be it known that 1, CHARLES HAMMER, a cltlzen of the. United States, residin at Queens, in the county of Queens and tate of New York, have invented certain new and useful Improvements in Scallop Jar- Closures, of which the following is a specificat1on.'

This invention has reference to closures for storage vessels especially those of glass such as bottles and jars, that have screwthreads or lugs on the neck, which closures are provided with inwardly extending projections arran ed to engage these lugs orthreads, where y on rotating the closure on top of the bottle it will screw down and be secured thereon by the engagement of these projections with the threads on the bottle or ar.

The object of the present invention is to provide a s ecial form of lug or projection on the insi e wall of the closure in which a kind of shelf or flange is formed at the-top Erojection, that of an upwardly extending cal nature for will present a. face of a he engagement with the helical lower face or surface of the thread or lug on the jar or bottle, but which shelf at one end portion is reduced until it merges into the raw free to of the projection, that lies in the same he ical surface for'engagement with the jar thread. A further object is to provide a closure with a shelf formation of this character, in which the shelf is supported and carried by the zflange that exten s upwardly inside of the rojection of the closure cap, and is inclined inwardly from the cy- -lindrical flange wall, whereby the shelf can have-a certain yielding mpvement radially outward on enga ement with the thread on thebottle thread will be strongly supported and'canyield only-a short distance, and constitute a secure form of closure.

one embodiment-of my invention, Fi' re 1 j isa' vertical central section through t e clo- In the accompanying drawing showing I sure before the flange projections are .bent

= u to final form. Fig.2 is a similar view of the closurein the finished cond1t1on.' Fig. 3 isabottomplan view of the closure.

Fig. 4 is a partial vertical section enlarged taken on the line of Fig. 3, and Figs. 5, 6, 7 and 8 are similar views In ad acent course.

positions, through the projections, as indicated by these numbers in Fig. 3.

As set forth in the drawing the cap or projection with the flange 10, so that the edge of the bend practically coincides with the lower circular edge of the flange portion, that is, the bottom of'the closure or cap extends in a practically unbroken The upper portion or margin 11 of each projection is bent over toward the vertical axis of the closure or of the cylindrical ortion thereof, whereby to form a kind of shelf 13 and this shelf preferably projects toward sure substantially perpendicular thereto. In other words radial lines perpendicular to the axis, or parallel with the top of the closure would coincide with the upper face of this shelf.

This shelf is also arranged whereby its top face is inclined to the plane of the closure top, and as shown extends in a substantially helical direction or path. The upper face of the shelf' as shown decreases its distance from the top of the closure gradually from one side ed e of the projection' toward the other side e ge. This" shelf 13 is' also 'made' of different width considered laterally of the closure in a radial direction, and as shown the shelf has its maximum width at its lowermost portion most remote from the closure top, as indicated by the section of Fig. 4, and also shown in Fig. 3. The con- "secutive sections show that the width of the shelf decreases as it becomes nearer the top of the shelf. This shelf is shown as terminating a short distance removed from the "other end of the lug, and at this portion the lip-standing portion 14 of the closure has its free raw edge-constituting practically a continuation of the upper surface the said axis of the 010-- the projection 12.

of the shelf; but both this surface andtlie raw edge lie in what is substantially a hellcal path adapted for engagement throughout its surface and edge, with the under face of the screw thread or lug on the jar.

This shelf 13 is carried and supported by the inclined connecting portion 14 of Figs. 5-8 that the shelf 13 portion has a comparatively by which it is supported.

at its widest short wall 14 lln Fig. 5 the supporting wall 14 increases in height with the shelf slightly narrower. In the other views it will be seen that the supporting wall increases in height asthe shelf decreases in Width radially considered, while at the other end portion the supportin wall 14 is of maximum height, and the shel has disappeared and is substantially merged into the free or raw edge of the projection 12. It will be further observed from these several sections that the supporting wall 14 is not bent abruptly upward or parallel with the cylindrical flange 10, but extends at an angle thereto. At the same time this supporting wall pantakes of the cylindrical curvature of the flangev wall, whereby to cause the shelf-to lie in a substantially helical path. By this arrangement the shelf 13 is at all portions slightly offset .from

the cylindrical side wall 10, and its dis- I tance therefrom increases from its lower portion of greatest width to the upper portion where it merges into the she f.

When a closure of this character is applied to a threaded jar, the lower surface of the jar thread will be engaged by this shelf practically throughout its top face, and also by the free 'raw lug edge at the end of the shelf. Since the supporting wall 14 of the shelf extends at an angle with the cylindrical side wall of the projection, the shelf can yield outwardly to a certain extent. Also since the supporting'wall 14 is inclined inwardly, the shelf may yield decreases in lateral width radially of the closure from one side edge ofithe projecslightly in a downward direction, whereby to compensate for irregularity in the thread or lug on the jar, and thereby form a se-- tion toward the other edge, at which latter portion the shelf terminates and merges into the free raw edge of the projection, theshelf being inclined t0 the 1 1) plane It will be seen from ependent pro ections naeaose of the closure in a helical form wherebyits distance from the top decreases from its wide end portion toward the other end. 2. A screw closure for a screw-threaded jar composed of a top and a flange having a plurality of independent pro ections on the lower edge, each projection being bent backinwardly to extend upward, the

upper margin of the projection being bent laterally to form a narrow shelf that ex tends toward the axis of the closure sub stantially perpendicular thereto and that decreases in lateral width radially of the closure from one side edge of the projection toward the other edge, at which-latter portion the shelf terminates and merges into the free raw edge of the projection,

the shelf being inclined to the top plane Y of the closure in a helical form whereby its distance from the top decreases from its wide end portion toward the other end, the projections below the. shelf being each inclined inwardly whereby theshelf "is 0&- set from the flange wall a gradually increasing distance from its lower wider end to the upper end thereof.

3. A screw closure for a screw-threaded jar composed of a to anda flange having a plurality of in ependent pro ections on the lower edge, a each projection being bent back inwardly to extend upward, the upper margin-of the. projection being bent laterally to form a narrow shelf that extends toward the axis of the closure substantially perpendicular thereto and that decreases in lateral width radially of the" closure from one side edge of the projection toward the other edge, at which latter portion the shelf terminates and merges into the free raw edge of the projection,

the shelf being inclined to-the top planeof the closure in a helical form whereby its distance from the top decreases from its wide end portion toward the other end; 1

each projection being bentinwardly on a curved edge coinciding with the circle of the lower margin of the flange between the projections whereby the lower edge of the flange between and including the projections extends in a substantially unbroken course. I

4; A screw closure for a screw-threaded jar composed of a to ing a -p urality' of in on thellower edge, each projection being bent back inwardly to extend upward, the

. upper margin of the projection being bent laterally to form a narrow shelf and that decreasesin' lateral width radially of the closure from one side edge of the projection toward the other edge, at which latter portion the shelf terminates and merges mto the free raw edge of the projectionyf' the shelf being inclined to the top plane of the closure in a helical form whereby and a flange hav ependent pro ectionsits distance from the top decreases from its wide end portion toward the other end.

5. A screw closure for a screw-threaded jar com osed of a top and a flange having a p urality of independent projections on the lower edge, each projection being bent back inwardly to extend u ward, the

upper margin of the projection eing bent laterally to form a narrow shelf and that decreases in lateral width radially of the closure from one side edge of the projection toward the other edge, at which latter portion the shelf 'termlnates and merges into the free raw edge of the projection, the shelf being inclined to the top plane of the closure in a helical form whereby its distance from the top decreases from its wide end portion toward the other end, the projections below the shelf being each inclined inwardly whereb the shelf is oftset from the flange wal a' gradually increasing distance from its lower wider end to the u per end thereof.

Signe at New York city, N. -Y., on

June 4th, 1918.

CHARLES HAMMER. 

